What Is An Ev? What Is A Stop - Minolta DiMAGE E223 Instruction Manual

Sometimes the camera's exposure meter is deceived by certain conditions. Exposure compensation
can be used in these situations. For example, a very bright scene, such as a snowy landscape or a
white sandy beach, can appear too dark in the captured image. Before taking the picture, adjusting
the exposure by +1 or +2 EV will result in an image with normal tonal values.
Calculated camera
exposure
In the example above, the dark water caused the camera to overexpose the image making it bright
and washed-out. By compensating the exposure, detail is brought out in the leaves, and the stones
and water appear richer.

What is an Ev? What is a stop?

Ev stands for exposure value. The term stop comes from the name of aperture plates used in early
lenses. A change of one Ev or one stop will adjust the exposure calculated by the camera by a factor
of two.
Change in Ev
+2.0 Ev
+1.0 Ev
0.0 Ev
–1.0 Ev
–2.0 Ev
–1.0Ev
Change in stops
+2 stops
+1 stop
Calculated exposure
–1 stop
–2 stops
–2.0Ev
Adjustment to exposure
4X as much light
2X as much light
1/2 as much light
1/4 as much light
29